Historical clue formulations

• A, as in April? — 2020-07-18
• Make time for — 2017-10-06
• Good thing to be on while working — 2012-09-15
• Plan — 2007-06-05
• It's full of 29-Downs — 2000-09-15
• Amtrak posting — 1999-03-15
• Timetable — 1996-04-29